/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:38,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:38,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:38,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:38,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:38,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:38,082 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:38,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:38,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:38,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:38,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:38,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:38,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:38,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:38,104 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:38,106 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:38,108 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:38,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:38,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:38,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:38,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:38,125 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:38,126 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:38,127 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:38,130 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:38,130 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:38,130 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:38,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:38,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:38,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:38,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:38,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:38,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:38,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:38,141 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:38,141 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:38,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:38,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:38,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:38,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:38,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:38,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:38,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:38,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:38,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:38,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:38,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:38,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:38,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:38,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:38,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:38,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:38,162 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:38,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:38,162 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:38,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:38,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:38,163 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:38,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:38,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:38,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:38,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:38,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:38,164 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:38,165 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:38,522 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:38,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:38,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:38,547 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:38,548 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:38,549 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-07-07 13:25:38,642 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b35dbdf/5f0bc4269ee34a6daf1f86f719b0eb06/FLAGb1f785b16 [2020-07-07 13:25:39,140 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:39,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-07-07 13:25:39,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b35dbdf/5f0bc4269ee34a6daf1f86f719b0eb06/FLAGb1f785b16 [2020-07-07 13:25:39,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96b35dbdf/5f0bc4269ee34a6daf1f86f719b0eb06 [2020-07-07 13:25:39,457 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:39,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:39,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:39,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:39,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:39,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:39" (1/1) ... [2020-07-07 13:25:39,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41eb98f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:39, skipping insertion in model container [2020-07-07 13:25:39,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:39" (1/1) ... [2020-07-07 13:25:39,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:39,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:40,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:40,124 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:40,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:40,275 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:40,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40 WrapperNode [2020-07-07 13:25:40,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:40,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:40,277 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:40,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:40,293 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... [2020-07-07 13:25:40,358 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:40,359 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:40,359 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:40,359 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:40,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:40,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:25:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:25:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:25:40,432 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:40,436 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:25:40,438 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:40,439 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:40,446 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:40,447 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:40,448 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:40,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:40,450 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:40,451 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:40,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:40,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:40,834 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:25:41,286 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:41,289 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-07-07 13:25:41,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:41 BoogieIcfgContainer [2020-07-07 13:25:41,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:41,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:41,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:41,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:41,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:39" (1/3) ... [2020-07-07 13:25:41,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c622c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:41, skipping insertion in model container [2020-07-07 13:25:41,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:40" (2/3) ... [2020-07-07 13:25:41,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c622c65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:41, skipping insertion in model container [2020-07-07 13:25:41,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:41" (3/3) ... [2020-07-07 13:25:41,310 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-07-07 13:25:41,322 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:41,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:25:41,350 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:25:41,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:41,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:41,378 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:41,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:41,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:41,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:41,383 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:41,384 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:41,418 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-07-07 13:25:41,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 13:25:41,431 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:41,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:41,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:41,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:41,438 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-07-07 13:25:41,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:41,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787642856] [2020-07-07 13:25:41,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:41,686 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:41,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787642856] [2020-07-07 13:25:41,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:41,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:41,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864775842] [2020-07-07 13:25:41,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:41,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:41,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:41,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:41,714 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-07-07 13:25:42,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:42,071 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-07-07 13:25:42,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:42,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-07-07 13:25:42,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:42,085 INFO L225 Difference]: With dead ends: 342 [2020-07-07 13:25:42,086 INFO L226 Difference]: Without dead ends: 166 [2020-07-07 13:25:42,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:42,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-07 13:25:42,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-07-07 13:25:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-07-07 13:25:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-07-07 13:25:42,149 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-07-07 13:25:42,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:42,150 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-07-07 13:25:42,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:42,150 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-07-07 13:25:42,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:25:42,153 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:42,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:42,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:42,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:42,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:42,154 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-07-07 13:25:42,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:42,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435245143] [2020-07-07 13:25:42,155 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:42,273 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:42,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435245143] [2020-07-07 13:25:42,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:42,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:25:42,274 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706092682] [2020-07-07 13:25:42,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:25:42,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:42,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:25:42,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:42,276 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-07-07 13:25:42,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:42,696 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-07-07 13:25:42,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:25:42,697 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-07-07 13:25:42,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:42,701 INFO L225 Difference]: With dead ends: 251 [2020-07-07 13:25:42,702 INFO L226 Difference]: Without dead ends: 201 [2020-07-07 13:25:42,704 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-07-07 13:25:42,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-07-07 13:25:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-07 13:25:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-07-07 13:25:42,738 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-07-07 13:25:42,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:42,738 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-07-07 13:25:42,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:25:42,739 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-07-07 13:25:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-07 13:25:42,742 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:42,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:42,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:42,743 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:42,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-07-07 13:25:42,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:42,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732396420] [2020-07-07 13:25:42,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:42,893 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:42,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732396420] [2020-07-07 13:25:42,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:42,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:25:42,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375733702] [2020-07-07 13:25:42,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:25:42,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:42,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:25:42,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:42,898 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-07-07 13:25:43,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:43,202 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-07-07 13:25:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:25:43,203 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-07-07 13:25:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:43,205 INFO L225 Difference]: With dead ends: 321 [2020-07-07 13:25:43,205 INFO L226 Difference]: Without dead ends: 202 [2020-07-07 13:25:43,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:25:43,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-07-07 13:25:43,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-07-07 13:25:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-07-07 13:25:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-07-07 13:25:43,230 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-07-07 13:25:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:43,231 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-07-07 13:25:43,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:25:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-07-07 13:25:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-07 13:25:43,233 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:43,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:43,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:43,234 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-07-07 13:25:43,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:43,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730171278] [2020-07-07 13:25:43,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:43,378 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:43,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730171278] [2020-07-07 13:25:43,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:43,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:25:43,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694339276] [2020-07-07 13:25:43,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:25:43,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:43,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:25:43,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:43,380 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-07-07 13:25:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:43,786 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-07-07 13:25:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:25:43,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-07-07 13:25:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:43,789 INFO L225 Difference]: With dead ends: 279 [2020-07-07 13:25:43,789 INFO L226 Difference]: Without dead ends: 273 [2020-07-07 13:25:43,790 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:25:43,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-07-07 13:25:43,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-07-07 13:25:43,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-07-07 13:25:43,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-07-07 13:25:43,814 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-07-07 13:25:43,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:43,815 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-07-07 13:25:43,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:25:43,815 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-07-07 13:25:43,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-07 13:25:43,817 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:43,817 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:43,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:43,818 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:43,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:43,818 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-07-07 13:25:43,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:43,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1549992996] [2020-07-07 13:25:43,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:43,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:43,833 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:25:43,839 INFO L168 Benchmark]: Toolchain (without parser) took 4379.54 ms. Allocated memory was 146.8 MB in the beginning and 245.9 MB in the end (delta: 99.1 MB). Free memory was 104.2 MB in the beginning and 200.9 MB in the end (delta: -96.7 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,840 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,841 INFO L168 Benchmark]: CACSL2BoogieTranslator took 815.40 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 104.0 MB in the beginning and 168.3 MB in the end (delta: -64.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,842 INFO L168 Benchmark]: Boogie Preprocessor took 81.39 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 164.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,843 INFO L168 Benchmark]: RCFGBuilder took 938.98 ms. Allocated memory is still 202.4 MB. Free memory was 164.5 MB in the beginning and 98.1 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,844 INFO L168 Benchmark]: TraceAbstraction took 2537.60 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 97.4 MB in the beginning and 200.9 MB in the end (delta: -103.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:25:43,849 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.8 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 815.40 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 104.0 MB in the beginning and 168.3 MB in the end (delta: -64.4 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.39 ms. Allocated memory is still 202.4 MB. Free memory was 168.3 MB in the beginning and 164.5 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 938.98 ms. Allocated memory is still 202.4 MB. Free memory was 164.5 MB in the beginning and 98.1 MB in the end (delta: 66.4 MB). Peak memory consumption was 66.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2537.60 ms. Allocated memory was 202.4 MB in the beginning and 245.9 MB in the end (delta: 43.5 MB). Free memory was 97.4 MB in the beginning and 200.9 MB in the end (delta: -103.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...